characterised by the arrangement of teeth or other cutting elements

Full Title

Drill bits (specially adapted for deflecting the direction of boring ; with means for collecting substances E21B27/00) > Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits (characterised by wear resisting parts E21B10/46; by conduits or nozzles for drilling fluid E21B10/60; by detachable or adjustable parts E21B10/62) > characterised by the arrangement of teeth or other cutting elements